Did you know that as far back as 7000 B.C., there have been evidence showing that drilling of holes in teeth back is already a practice? During that time, it was believed that these holes were to allow evil spirits to escape in lieu of fixing a decaying tooth. Also, there are evidence showing that people during those time used gold to fill the teeth.
Nowadays, dental fillings are used to replace a gap or cavity in a tooth. When a tooth is decaying or has become too rotten, it calls for replacement already. A dentist drills a hole in the tooth to remove any decay and then fills the space with a metal, porcelain or plastic material. Also, more precious and semi-precious metals are being used to make dental crowns. Some examples include gold, silver, platinum, and palladium.
If you happen to have a lot of old and damaged dental scrap, look for dental scrap refiners that pay quick cash for it. This is a great way to earn extra cash on the side.